← Area code 620
620-725 phone numbers
Numbers 620-725-0000 to 620-725-9999 are assigned to Southwestern Bell in Sedan, KS. 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 620-725-2xxx, 620-725-7xxx, 620-725-8xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.